Universal box template
In-Vehicle single 15-inch round Vented subwoofer box - 85 L / 32 Hz - 692 × 529 × 394 mm

Description
This vented (bass-reflex) enclosure is designed for a single 15-inch round subwoofer, featuring an 85 L chamber tuned to 32 Hz. Built as a simple rectangle from 18 mm (3/4 inch) material, the cabinet measures 692 × 529 × 394 mm (27.62 × 20.88 × 15.53 in) in width, height, and depth. It incorporates one L-shaped slot port positioned on the right side to ensure consistent visual alignment and ease of installation. The port area is specifically suited for high-output, large-excursion drivers and SPL-oriented use requiring high airflow. This design is optimized for everyday car-audio use, balancing sound quality with limited trunk space and installation constraints.